Molding apparatus.



T. DE LA HUNTY.

MOLDING APPARATUS.

' APPLIGATION FILED JAN.7,1910. 976,464.

Patented Nov. 22, 1910.,

2 SHEETS-SHEET 1.

WITNESSES Q 7 7&0772z5a jirm I T. DE LA HUNTY.

I MOLDING APPARATUS. APPLICATION FILED JAN.7,1910.

FIG. 5

IN YE N TOP mum/5555 THE "cams PETERS c0.. WASHING7ON, n. c.

"barman stares Par r THOMAS DE LA HUNTY, OF ST. LOUIS, MISSOURI,ASSIGNOR TO SCULLIN-GALLAGHER IRON & STEEL COMPANY, OF ST. LOUIS,MISSOURI, A CORPORATION OF MISSOURI.

MOLDING APPARATUS.

crease.

To all whom it may concern:

Be it known that I, THOMAS on LA HUNTY, a citizen of the United States,residing at St. Louis, Missouri, have invented a certain new and usefulImprovement in Molding Apparatus, of which the following is a full,clear, and exact description, such as will enable others skilled in theart to which it appertains to make and use the same, reference being hadto the accompanying drawings, forming part of this specification, inwhich Figure l is a perspective view of a molding apparatus of myimproved construction, the same being adapted for molding underframes tobe utilized in railway car construction; Fig. 2 is a perspective view ofthe pattern utilized in the apparatus seen in Fig. 1; Fig. 3 is anenlarged vertical section taken on line 3-3 of Fig. 1; Fig. 4c is asection similar to Fig. 3 and showing the flask completed; Fig. 5 is aperspective vlew of one of the units or sections utilized in my improvedapparatus.

My invention relates generally to molding apparatus, the particularobject being to form the matrix walls and cores of the flask in units orsections, thus providing for the building up or formation of the mold inmuch less time and with much less labor than is necessary under thepresent practice. here a mold is formed or built up of units orsections, as contemplated by my invention, it is possible to utilizecores and matrix walls of green sand keyed to backingplates, as shown ina companion case filed by me of even date, Serial No. 536,856, and asthese green sand cores and matrix walls are readily formed, it ispossible to quickly build up the flask with a minimum amount of labor,thereby effecting a considerable saving of time and consequent expenseincident to the formation of flasks and mold-boxes.

To the'above purposes, my invention con sists in certain features ofnovelty hereinafter more fully described and claimed.

Referring by numerals to the accompany ing drawings, 1 designate-s abase or bed plate on which the mold is formed, and fixed on said plateis an open-topped box 2 which forms the flask. As hereinbefore stated,the mold is made up in sectional form, utilizing the unit system, andeach unit or section preferably comprises a base or backing-plateSpecification of Letters LEatent. Patgnt d N 22 191() Application filedJanuary 7, 1910.

Serial No. 536,855.

3, to which is keyed a body 4 of green sand, the same being pressed intoproper shape in any suitable manner. The backing-plate may be dispensedwith if desired. A series of the sections are properly located withinthefiask 2 to form the bottom of the matrix, after which the spacingframe 5 is positioned on the matrix base sections. The matrix walls areformed of a series of the sections fitted in around the frame 5, whichmatrix walls are given the proper form by a die or pattern utilized inthe press which packs the green sand onto the backing-plate. After thesections forming the matrix walls have been assembled, the spacesoutside the matrix walls and within the flask 2 are filled with greensand which is tamped down and leveled ofi flush with the tops of thematrix walls, thus building up the mold to the form shown in Fig. 3. Theframe 5 is now removed and the drag is complete. A series of matrix topplates 6, or copes formed of backing-plates having green sand keyed toone side thereof are now positioned directly on top of the matrix walls,these forming top or cover plates for the mold, after which the spacesbetween said top or cover plates may be filled with green sand ifdesired.

Clamping bars 7 may be employed to hold the cope units in position.Suitable gates and vents are, of course, provided, but are not shown onthe drawings. Thus a mold is formed wherein the matrix walls of the dragand cope are made in units or sections, and as said units are formed insuitable presses, much time and labor incident to the filling andtamping of the mold is saved. Extra large molds and molds of peculiarshape can be readily formed by utilizing the unit system as hereindescribed, and such system also does away with the time, labor andexpense involved in producing large patterns. Furthermore, by separatelymaking and positioning the bottom, side and top units, castings can bemade which under the usual method would be impossible because the patterns could not be drawn.

While I prefer to form the matrix walls and cores of backing plateshaving green sand keyed thereto, it will be readily understood that thesectional or unit idea can be carried out by utilizing green sand unitsto form a matrix, and a sand filler for the spaces outside the matrixWalls.

In a molding apparatus, a mold having sectional matrix Walls of greensand, one

section engaging one portion of a pattern,

and an independent section another portion of a pattern.

4, In a molding apparatus, a mold having sectional matrix Walls of greensand, one section engaging one portion of a pattern, and an independentsection engaging another and remote portion of a pattern.

5. In a molding apparatus, a mold having sectional matrix Walls of greensand, one section engaging one portion ofa pattern,

and an independent section engaging another and substantial parallelportion of a pattern.

" 6. In a molding apparatus, apattern having portions arranged at anangle to each 7 other, a mold having sectional matrix Walls of greensand, comprising sections inclosing the top, side and bottom of oneportion of the pattern, and independent sections inclosing the top sideand bottom of another and angularly arranged portion of the pattern.

7. In a molding apparatus, a pattern having substantially parallelportions, and a mold having sectional matrix Walls of green sand,comprising sections inclosing the top,

side and bottom of one portion of the pattern, and independent sectionsinclosing the top side and bottom of a parallel portion of the pattern.

8. The art of making a mold, which consists in anchoring green sand upona series of backing-plates assembling the units so formed, interposing aremovable frame whereby said units are spaced apart, removing said frameand arranging the cover plates in position to complete the mold cavity.

9. The art of making molds, which consists in arranging a pattern frameWithin a flask, assembling green sand units about said frame, removingframe, and placing green sand units over the space occupied by the frameto complete the mold cavity.

10. The art of making a mold Which consists in arranging a pattern framehaving portions at an angle to each other within a flask, assemblingindependent green sand units about the several portions of the frame andremoving the frame.

In testimony whereof I hereunto afiix my signature in the presence oftwo Witnesses, this 29th day of December 1909.

THOMAS DE LA I-IUNTY. lVitnesses:

M. P. SMITH, ALMA GEBHART.

